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I need help with this equation this is a 5 part answer

I need help with this equation this is a 5 part answer-example-1
User Garryp
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1 Answer

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6 votes

We are given the following inequality


(2x+1)(x-2)(3x-4)\leq0

First, let us solve each factor.


\begin{gathered} (2x+1)\leq0 \\ 2x+1-1\leq-1 \\ 2x\leq-1 \\ (2x)/(2)\leq-(1)/(2) \\ x\leq-(1)/(2) \end{gathered}
\begin{gathered} (x-2)\leq0 \\ x-2+2\leq2 \\ x\leq2 \end{gathered}
\begin{gathered} (3x-4)\leq0 \\ 3x-4+4\leq4 \\ 3x\leq4 \\ (3x)/(4)\leq(4)/(3) \\ x\leq(4)/(3) \end{gathered}

Now, we have to merge the overlapping intervals


(4)/(3)\leq x\leq2\;\;or\;\;x\leq-(1)/(2)

Therefore, the solution of the given inequality is


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User Colin Bull
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